Localization Properties of Zig‐Zag Edge States in Disordered Phosphorene

Abstract

Herein, the spectral and transport properties in the finite phosphorene lattice are investigated using the tight‐binding model in the presence of Anderson disorder potential. The focus is on the zig‐zag edge states localization, provided by the numerically calculated inverse participation number. At low disorder, the zig‐zag states undergo a localization process, keeping their 1D character, while further increasing the disorder leads to delocalization due to hybridization with the extended 2D states. The disorder‐induced changes in the electronic conductance, from one zig‐zag edge to the other, are also discussed.